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→リストのBinding
====リストのBinding====
----
[[File:swiftui_binding_list.png|500px]]
*Model
<pre>
import Foundation
import AppKit
import SwiftUI
class File : Identifiable, ObservableObject {
let id = UUID()
let path: String
let name: String
let isDirectory: Bool
var isOn: Bool = false
init(path: String, name: String, isDirectory: Bool, isOn: Bool) {
self.path = path
self.name = name
self.isDirectory = isDirectory
self.isOn = isOn
}
}
class FileList : ObservableObject {
@Published var files: [File] = []
}
</pre>
*UI
<pre>
import SwiftUI
struct ContentView: View {
@ObservedObject var filePaths = FileList()
@State private var selectedPaths = Set<File.ID>()
var body: some View {
Button(action: {
let rootDir = EncConverterService.chooseDir()
let queue = DispatchQueue.global(qos: .userInitiated)
queue.async {
EncConverterService.loadFile(directoryPath: rootDir, filepaths: self.filePaths)
}
}) {
Text("Choose dir")
}
Table($filePaths.files, selection: $selectedPaths) {
TableColumn("path") { $file in
let isDir = file.isDirectory
HStack {
if !isDir {
Toggle("",isOn: $file.isOn)
.padding(.leading, (isDir) ? 0 : 20)
}
Text((isDir) ? file.path : file.name)
.font((isDir) ? .headline : .none)
}
}
}
Text("\(selectedPaths.count) path selected")
}
}
</pre>
===画像===
© 2006 矢木浩人
